ML20085F344

AO AO-75-8:from 750406-07,indicated Temp of Mixing Basin Discharge More than 5 F Above Indicated Temp of Plant Intake Water.Caused by Excess Amount of Water Going Over Cooling Tower Pump Makeup Basin Overflow

ML20085F344
Person / Time
Site:	Palisades
Issue date:	04/08/1975
From:	De Witt R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20085F331	List: ML20085F328 ML20085F334 ML20085F344
References
AO-75-8, NUDOCS 8308220061
Download: ML20085F344 (2)

Text

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I l375/iP.? -9 p". # VEC220(1509)(1-028545C098)PD 04/08/75 1502 I2 TLX CONSPOWER JKN ZCZC 008 DLY J ACKSON MICHIG Ag 4-8-710K No._ ___OFR. I;0. PMS USNRC unk~ SyXp e $ c u n . _$3_2 - __ Q S R r) lc [c O _ l REGION III a . g ', g TnE.rera T0__. 9 W i.BY _ldl.. 799 ROOSEVELT ROAD ]"d/ R AMP L"" . I/f - T - - - - f?E GLEN ELLYN , IL &c /8 7 AT" * * '

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SUBJECT - ABNORMAL OCCURRENCE-75-8-~ VERIFICATION OF PHONE CONSERVATION WITH MR KEN BAKER ON APRIL 7, 1975 AT 0815. REPORTED BY G B SLADE. FILE A0 75-8 REPORT NO. 75-8 SF.1201 (R5 69) ! REPORT DATE APRIL 7, 1975 OCCURRENCE DATE APRIL 7, 1975 # SS' [,]V

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7$' IDENTIFICATION OF OCCURRENCE - PLANT DISCHARGE TEMPERATURE oo pg FARENHEIT HIGHER THAN LAKE INLET TEMPEHATURE. l ?  ?

                 <x gg DESCRIPTION OF OCCURRENCE - FROM APRIL 6 THRU APRIL 7TH THE INDICATED TEMPERATURE OF THE MIXING BASIN DISCHARGE - WHICH CONSISTED OF COOL-gg             ING TOWER PUMP MAKE UP BASIN OVERFLOW PLUS DILUTION WATER - WAS MORE e

THAN 5 DEGREES FARENHEIT AB0VE THE INDICATED TEMPERATURE OF THE

                           "'TNTAKE WATER.

5 DIS EXCEEDS THE TECHNICAL SPECIFICATION LIMIT AS _ _ _ . . _ _ . _ _ _ _ _ _ _ _ , _ - _ , _ _ . _ _ . . _ _ _ _ . , _ , . , . _ _ _ _ _ _ _ _ ___,____m _

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l t Cl5!lF? -8 ?;t 3. jp FOUND IN SECTION 3.9.9. ANALYSIS OF OCCURRENCE - THE GREATER THAN 5 DEGREE FARENHEIT TEMPERA-TURE LIMITATION WAS EXCEEFJWR . -0049/8.-53)6 0500 ON APRIL 6, 1975 THRU APRIL 7TH AT APPROXIMATELY 1600. THIS WAS CAUSED BY HAVING AN EXCESS AMOUNT OF WATER GOING OVER THE C00LIhG TOWER PUMP MAKEUP BASIN OVERFLOW. CORRECTIVE ACTION - THE TEMPERATURE DIFFERENCE WAS REDUCED BELOW THE 5 DEGREE TEMPERATURE LIMITATION BY LOWER THE COOLING TOWER PUMP MAKEUP BASIN LEVL TO REDUCE OVERFLOW BY INCREASING THE AMOUNT OF COOLING TOWER ELOWDOWN. THE WATER REJECID AS BLOWDOWN IS ABOUT 25 DEGREES FARENHEIT LOWER THAN THE WATER WHICH OVERFLOWS THE MAKEUP 8"'" TXSIN WEIR BECAUSE IT nAS NOT BEEN THRU THE CONDENSER. AS POWER IS INCREASED TOWER DRIFT IS EXPECTED TO FURTHER REDUCE THE AMOUNT OF WATER OVERFLOWING FROM THE COOLING TOWER PUMP MAKEUP BASIN. PREVIOUS OCCURRENCES - TWO RELATED OCCURRENCES - A0 75-6 ND A0 75-7. CC: ALL FOR PARNALL RO AD R B DE WITT CONSUMERS POWER CO ~ PALISADES NUCLEAR POWER PLT ALL H0 ssa mw> APR 1og <

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